21142411042 has 24 divisors (see below), whose sum is σ = 32533437888. Its totient is φ = 10304664480.

The previous prime is 21142411033. The next prime is 21142411061. The reversal of 21142411042 is 24011424112.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5992683 + ... + 5996209.

It is an arithmetic number, because the mean of its divisors is an integer number (1355559912).

Almost surely, 2^21142411042 is an apocalyptic number.

21142411042 is a deficient number, since it is larger than the sum of its proper divisors (11391026846).

21142411042 is a wasteful number, since it uses less digits than its factorization.

21142411042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5394 (or 5353 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 21142411042 its reverse (24011424112), we get a palindrome (45153835154).

The spelling of 21142411042 in words is "twenty-one billion, one hundred forty-two million, four hundred eleven thousand, forty-two".